Western Digital Corporation ended the session at 519.17 USD, retreating 5.36%.

A single massive options trade dominated the session: a $1.34 million out-of-the-money call sale at the $690.00 strike. This bearish premium-selling flow, with no offsetting bullish large trades, drove a clearly negative sentiment in the large-trade tape, signaling expectations for limited upside in the stock.

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Options Indicators

WDC’s implied volatility is 99.25%, and with an IV percentile of 87.65%, current volatility sits in an elevated regime where options are priced expensively relative to the stock’s recent history. The IV/HV ratio of 1.01 suggests implied volatility is broadly in line with realized volatility, but the high percentile still indicates the market is assigning a rich premium to options at current levels, so buyers are paying up for exposure while premium-selling structures may offer better relative value. The Call/Put volume ratio is 1.22.

Large Trades

A CALL sale worth $1.34 million stood out as the key large trade, with 1,525 contracts sold at the $690.00 strike expiring on 2026-08-21. With the stock reference price at $519.17, this call was clearly out of the money at the time of execution. Selling an out-of-the-money call at such a distant strike typically reflects a bearish-to-neutral stance, suggesting the trader does not expect WDC to rally toward that level by expiration and is positioning to collect premium while capping upside exposure above the strike.

Overall, the large-trade flow in WDC was clearly bearish. The activity was entirely concentrated in bearish premium-selling call flow, with no offsetting bullish large trades appearing in the dataset. That pattern points to a market view that upside is limited over the relevant time horizon, and the dominant large trader positioning suggests expectations for subdued performance or at least resistance well below the $690.00 level.

Strategy Reference

Traders seeking a low assignment probability could consider selling the $690.00 strike call or even lower strikes for richer premium, while those wanting a defined-risk alternative may deploy a bear call spread by purchasing a higher-strike call to cap margin requirements.